The surface area of the composite figure is 662 square cm
Surface area of a figure.
The surface area of the sum of all the area of the faces of a figure. The given figure is made up of two rectangular prism.
The surface area of a rectangular prism is given as;
TSA = 2(lw + wh + lh)
l is the length
w is the width
h is the height
Determine the required surface area
TSA = 2[(3)(3)+3(8)+3(8)]+2(7(10)+7(12)+10(12)]
TSA = 2(9+48)+2(190+84)
TSA = 114 + 548
TSA = 662 square cm
Hence the surface area of the composite figure is 662 square cm
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